Structure for a backup fan

ABSTRACT

An improved structure for a backup fan includes a containment case comprising a top opening and at least one containment space, each containment space has a front-side ventilation opening and a back-side ventilation opening; at least one first fan capable of being positioned in the containment space of the containment case through the top opening of the containment case; at least one second fan capable of being positioned in the containment space of the containment case through the top opening of the containment case, the second fan and the first fan placed tightly next to each other; and a top cover for covering the top opening of the containment case.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an improved structure for a backup fanand, more particularly, to an improved structure for a backup fan whichis easily assemble, change and disassemble.

2. Description of the Related Art

Due to the high operational speeds of computer chips, it is important toprovide a good heat removal system; otherwise the operational speeds ofthe computer chips may slow down, or the chips can even burn out. Asshown in FIG. 1, a prior art fan structure has one or two fans 400 fixedon a frame 600 by screws 500, and the frame 600 is clamped to a board ora housing. However, when the fan 400 breaks, the user generally will notnotice until the computer gets too hot, or until the chip burns out.Furthermore, it is not easy to disassemble the fan 400; all of thescrews 500 must first be unscrewed to disassemble the fan 400 from theframe 600. Moreover, installation of a backup fan requires additionalspace, which is not a preferred approach for computer hardware designs.

Therefore, it is desirable to provide an improved structure for a backupfan to mitigate and/or obviate the aforementioned problems.

SUMMARY OF THE INVENTION

A main objective of the present invention is to provide an improvedstructure for a backup fan, which is easy to assemble, change anddisassemble.

In order to achieve the above-mentioned objective, the improvedstructure for a backup fan of the present invention comprises acontainment case comprising a top opening and at least one containmentspace, each containment space has a front-side ventilation opening and aback-side ventilation opening; at least one first fan capable of beingpositioned in the containment space of the containment case through thetop opening of the containment case; at least one second fan capable ofbeing positioned in the containment space of the containment casethrough the top opening of the containment case, the second fan and thefirst fan placed tightly next to each other; and a top cover forcovering the top opening of the containment case.

Furthermore, the containment case further comprises a slot and a stayring, the top cover comprising a pin and a fastening plug, the pin ofthe top cover capable of inserting into the slot of the containmentcase, and the fastening plug of the top cover capable of being fastenedin the stay ring of the containment case. Moreover, there is acontainment space, a first fan and a second fan, or alternatively, thereare two containment spaces, two first fans and two second fans.

Other objects, advantages, and novel features of the invention willbecome more apparent from the following detailed description when takenin conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic drawing of a prior art fan.

FIG. 2 is a perspective view of an improved structure for a backup fanof an embodiment according to the present invention.

FIG. 3 is an assembly schematic drawing of the backup fan according tothe present invention.

FIG. 4 is an assembly schematic drawing of a top cover and a containmentcase according to the present invention.

FIG. 5 is a schematic of an improved structure for a backup fan disposedin the case according to the present invention.

FIG. 6 is a schematic drawing of another embodiment according to thepresent invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The First Embodiment:

Please refer to FIG. 2. FIG. 2 is a perspective view of an improvedstructure for a backup fan of an embodiment according to the presentinvention. The improved structure of the present invention comprises acontainment case 10, two first fans 20, 21, two second fans 30, 31 and atop cover 40. The containment case 10 has a top opening 11 and twocontainment spaces 12, 13. The containment spaces 12, 13 each have afront-side ventilation opening 121, 131 and a back-side ventilationopening 122, 132. Furthermore, the containment case 10 further comprisesa slot 14 and a stay ring 15. The first fans 20, 21 can be disposed inthe containment space 12, 13 of the containment case 10 through the topopening 11 of the containment case 10; the second fans 30, 31 can bepositioned in the containment space 12, 13 of the containment case 10through the top opening 11 of the containment case 10; and the secondfans 30, 31 and the first fans 20, 21 are tightly placed next to eachother. The top cover 40 is used to cover the top opening 11 of thecontainment case 10. The top cover 40 comprises a pin 41 at one end anda fastening plug 42 at the other end; the pin 41 of the top cover 40 canbe inserted into the slot 14 of the containment case 10, and thefastening plug 42 of the top cover 10 can be fastened in the stay ring15 of the containment case 10 so that the top cover 40 covers the topopening 11 of the containment case 10.

In order to install the backup fan in the case, the first fans 20, 21and the second fans 30, 31 are first respectively placed in thecontainment spaces 12, 13 of the containment case 10, as shown in FIG.3, and then the pin 41 of the top cover 40 is inserted into the slot 14of the containment case 10, and the fastening plug 42 of the top cover10 is fastened in the stay ring 15 of the containment case 10, as shownin FIG. 4. Finally, as shown in FIG. 5, the entire backup fan structureis mounted in a case 100.

When the first fans 20, 21 or the second fans 30, 31 become broken andneed to be replaced, the case 100 first must be opened, and then thefastening plug 42 of the top cover 10 is loosened from the stay ring 15of the containment case 10 and the pin 41 of the top cover 40 is removedfrom the slot 14 of the containment case 10 so that the top cover 40 andthe containment case 10 are separated. A user can take out the brokenfans and install new fans as described in the above steps.

The Second Embodiment:

In this embodiment, both the structure and installation process aresimilar to the first embodiment; the only difference is that the secondembodiment only contains one first fan 200 and one second fan 300.

The advantage of the present invention is that no screws are needed forinstalling, and so when the user notices that the fan is broken, he orshe can disassemble the fan without requiring any tools. Furthermore,the present invention requires only a small space; regardless of howmany fans are installed, only one containment case is required, insteadof requiring a containment case for each individual fan as in the priorart. Moreover, the structure of the present invention can be extended toaccommodate additional fans to satisfy the needs of the user.

Although the present invention has been explained in relation to itspreferred embodiment, it is to be understood that many other possiblemodifications and variations can be made without departing from thespirit and scope of the invention as hereinafter claimed.

1. An improved structure for a backup fan comprising: a containment casecomprising a top opening and at least one containment space, eachcontainment space has a front-side ventilation opening and a back-sideventilation opening; at least one first fan capable of being positionedin the containment space of the containment case through the top openingof the containment case; at least one second fan capable of beingpositioned in the containment space of the containment case through thetop opening of the containment case, the second fan and the first fanplaced tightly next to each other; and a top cover for covering the topopening of the containment case.
 2. The improved structure as claimed inclaim 1, wherein the containment case further comprises a slot and astay ring, the top cover comprising a pin and a fastening plug, the pinof the top cover capable of inserting into the slot of the containmentcase, and the fastening plug of the top cover capable of being fastenedin the stay ring of the containment case.
 3. The improved structure asclaimed in claim 1, wherein there is one containment space, one firstfan and one second fan.
 4. The improved structure as claimed in claim 1,wherein there are two containment spaces, two first fans and two secondfans.